Yes, Sublime Text 3 will be supported. Right now I am finishing up getting Package Control fully working for ST3, after which I will focus my efforts on updating my SFTP and SVN packages.

It is very unlikely that updating the packages will require a rewrite, so I am not currently planning on bumping the major version for the packages to 2.0. However, if I do, all users who bought a license in the past year will get a free upgrade.

1. There's a shortcut for switching remote mapping? 2. If after uploading a file to server1, a switch to server2 and I press "ctrl+alt+u" to upload the file I receiving the errore "SFTP: connection timeout", then I press OK and again ctr+alt+u and it works.